by Mara Liasson
Voter dissatisfaction with both parties is at an all-time high — and voters' trust in Washington is at an all-time low.
This is the kind of political climate that is welcoming for an alternative to the Democrats and the Republicans.
Pollster Stan Greenberg worked for Bill Clinton in 1992, when third-party candidate Ross Perot roiled the race. If it happened back then, Greenberg says, it can happen again next year.
"I can't imagine that with 85 percent of the country thinking we're on the wrong track that there won't be a third-party candidate," he says. "There has to be. There's too much opportunity, too much anger with politics."
